Beyonce Knowles waved to fans from her balcony in Brazil yesterday wearing a cutoff shirt that gave onlookers a glimpse of her toned abs. The singer is currently touring her way through South America hot off her jaw-dropping Grammy performance and impressive six wins at last week's ceremony. If she's looking for another chance to round out her collection with an Oscar, B has a new acting gig in the works — she's rumored to be starring opposite Russell Crowe in a remake of A Star is Born. She was able to embrace a new character today as she teamed up with Alicia Keys on the set of her music video "Put It In A Love Song."
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